When someone ashes a cigarette into an ashtray, after a few hours, just like the phoenix, the babies rise from the ashes and crawl to the nearest maternity ward to be given to adult humans.

Where babies come from is one of the most common queries lobbed at parents, according to Bartell, who wrote The Top 50 Questions Kids Ask.

What Makes a Baby is, as you'd probably suspect from the title, a picture book intended to teach young children about where they come from. In other words, it's an origin story.

There are a slew of other regulations outlining what film crews can and can’t do with a baby. In California, infants under 6 months are allowed on-set for two hours a day, but their actual ...